(19)

(11)

EP 4 519 166 A2

(12)

(88) Date of publication A3: 22.02.2024 (43) Date of publication: 12.03.2025 Bulletin 2025/11 (21) Application number: 23812307.9 (22) Date of filing: 28.04.2023

(51) International Patent Classification (IPC):  B64D 27/24(2024.01) (52) Cooperative Patent Classification (CPC): B64D 2045/0085; B64C 29/0025; B64D 2221/00; B64D 27/34; B64D 31/16; B64D 27/31 (86) International application number: PCT/US2023/020342 (87) International publication number: WO 2023/229790 (30.11.2023 Gazette 2023/48)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 04.05.2022 US 202217736317 (71) Applicant: Beta Air, LLC South Burlington, Vermont 05403 (US)	(72) Inventors: BELZILE, Manon Danielle BURLINGTON, Vermont 05403 (US) CHURCHILL, David BURLINGTON, Vermont 05403 (US) (74) Representative: Mewburn Ellis LLP  Aurora Building Counterslip Bristol BS1 6BX Bristol BS1 6BX (GB)